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https://github.com/Z3Prover/z3
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disable bdd variable elimination
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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parent
55eb11d91b
commit
528dc8a3f8
10 changed files with 58 additions and 32 deletions
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@ -1518,6 +1518,14 @@ namespace sat {
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}
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void block_covered_clause(clause& c, literal l, model_converter::kind k) {
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if (false && l.var() == 39021) {
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IF_VERBOSE(0, verbose_stream() << "blocked: " << l << " @ " << c << " :covered " << m_covered_clause << "\n";
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s.m_use_list.display(verbose_stream() << "use " << l << ":", l);
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s.m_use_list.display(verbose_stream() << "use " << ~l << ":", ~l);
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/*s.s.display(verbose_stream());*/
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);
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}
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TRACE("blocked_clause", tout << "new blocked clause: " << c << "\n";);
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SASSERT(!s.is_external(l));
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model_converter::entry& new_entry = mc.mk(k, l.var());
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@ -1563,7 +1571,6 @@ namespace sat {
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for (literal l2 : m_intersection) {
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watched* w = find_binary_watch(s.get_wlist(~l), ~l2);
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if (!w) {
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IF_VERBOSE(10, verbose_stream() << "bca " << l << " " << ~l2 << "\n";);
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s.s.mk_bin_clause(l, ~l2, true);
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++s.m_num_bca;
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}
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@ -1934,6 +1941,7 @@ namespace sat {
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m_new_cls.reset();
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if (!resolve(c1, c2, pos_l, m_new_cls))
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continue;
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// if (v == 39063) IF_VERBOSE(0, verbose_stream() << "elim: " << c1 << " + " << c2 << " -> " << m_new_cls << "\n");
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TRACE("resolution_new_cls", tout << c1 << "\n" << c2 << "\n-->\n" << m_new_cls << "\n";);
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if (cleanup_clause(m_new_cls))
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continue; // clause is already satisfied.
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@ -2045,7 +2053,7 @@ namespace sat {
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m_subsumption = p.subsumption();
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m_subsumption_limit = p.subsumption_limit();
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m_elim_vars = p.elim_vars();
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m_elim_vars_bdd = p.elim_vars_bdd();
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m_elim_vars_bdd = false && p.elim_vars_bdd(); // buggy
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m_elim_vars_bdd_delay = p.elim_vars_bdd_delay();
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m_incremental_mode = s.get_config().m_incremental && !p.override_incremental();
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}
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